Re: Calibration of 8" floppy drive?

> Date: Sat, 6 Feb 2016 00:46:33 -0500 > From: Dan K <100dash...@gmail.com> > To: "General Discussion: On-Topic and Off-Topic Posts" > > Subject: Re: Calibration of 8" floppy drive? > Message-ID: >5...@mail.gmail.com> > Content-Type: text/plain; charset=UTF-8 > > Are there any good

Re: Calibration of 8" floppy drive?

One interesting thing I noticed (and I'm investigating at this very moment) is the arrangement of the head load armature. A spring-loaded arm will swing down and push the felt pad against the media, which brings it into conformity with the head. However, there's a little thing on the lever that tou

Re: Calibration of 8" floppy drive?

It figures: after all this talk about neither of the drives working, I plugged one of them in (the one that's in better condition) and it now recognizes the disk. The felt pad presses on the media, at least very lightly, and perhaps this is the source of the main problems in the other drive. Other

Re: Programming

Murray McCullough skrev den 2016-02-07 01:40: On the lighter side: “Computers can never completely replace humans. They may become capable of artificial intelligence(much in the news today), but they will never master real stupidity.” Or to quite a poem from my early days in programming (ca 19

Re: NiCd battery replacement in vintage computers

I found a reference which states that the NVRAM is used to hold SCSI controller parameters. I decided to mount a CR123A holder inside the case on one of the slot filler panels. I had some through-hole PCB mount CR123A holders left over from a previous project. I machined a mounting base for the

Re: Oddball floppies for trade - 8", HS (outer edge), weird cutout

Hello Jay! I think I sent a message related to these floppies before and since now is long since the original message they're probably gone, but I need to check to be sure. I am interested in those oddball floppies with sector holes at the edge for my Incoterm SPD 10/25 machine, are they still fo

Re: Oddball floppies for trade - 8", HS (outer edge), weird cutout

Sorry. Should have been off-list. My fault. /Mattis 2016-02-07 13:35 GMT+01:00 Mattis Lind : > Hello Jay! > > I think I sent a message related to these floppies before and since now is > long since the original message they're probably gone, but I need to check > to be sure. > > I am interested

Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

Hi Folks, I'm looking for some insights in getting an original Altair running again. My buddy asked for my help getting his Altair running again. He went through and replaced all the electrolytic caps, cleaned up everything and then tried to get the MITS 88 2-SIO board to run a simple echo progr

luceracloud/seqtest - was Re: Announcing TCP/IP for RSX-11M-PLUS

On 2015-11-08 7:50 AM, Johnny Billquist wrote: Argh. For anyone who have downloaded the release I cut yesterday - please get the new version (that goes for everyone else as well). I just discovered and fixed an obscure bug that can crash the system. It's something that happens under very specifi

Tired of EVERYTHING with a gear being called STEAMPUNK? Yikes I am...

Tired of EVERYTHING with a gear being called STEAMPUNK? Yikes I am... This fun and creative video pretty much sums things up! https://www.youtube.com/watch?v=TFCuE5rHbPA Enjoy - Ed#

386 upgrade board

Greetings! I have a Televideo luggable that I have been playing with. Its a 10MHz 286 with a meg of RAM, 2 360k drives and four expansion slots. I've been trying to figure out how capable I can make this machine for the hell of it. Did anyone make an upgrade kit to go from a 286 to a 386? It would

Re: 386 upgrade board

On Sun, 7 Feb 2016, Joe Giliberti wrote: Greetings! I have a Televideo luggable that I have been playing with. Its a 10MHz 286 with a meg of RAM, 2 360k drives and four expansion slots. I've been trying to figure out how capable I can make this machine for the hell of it. Did anyone make an upgra

Re: Tired of EVERYTHING with a gear being called STEAMPUNK? Yikes I am...

On 07/02/2016 17:50, couryho...@aol.com wrote: Tired of EVERYTHING with a gear being called STEAMPUNK? Yikes I am... This fun and creative video pretty much sums things up! https://www.youtube.com/watch?v=TFCuE5rHbPA Epic! -- Pete

The PDP11/04 has landed..

Yesterday I picked up the PDP11/04 that Jay mentioned a few days ago. Less than 15 miles from home ! The machine spend its early days as a processor in chemical analysis apparatus, and was subsequently bought by the employee using it. Before he could make use of it better, more powerful, easi

Re: Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

On 2016-Feb-07, at 6:17 AM, Robo58 wrote: > c). I hand assembled some code to exercise the 6850. I know it has a > software reset and then you set attributes. I tried my buddies echo > program. It looks for a received character and then echo's it. I'm using a > laptop and PuTTy along with an R

RE: The PDP11/04 has landed..

Jos wrote... -- restoration is to start next winter, after a house move which will nearly double working area for the hobby. -- Bhahahahaha From experience... it will never be enough space. Double it again. Still won't be enough. These things reproduce *grin* J

RE: Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

Hi Guys, I also have an original Altair 8800 that has not been powered up since I was in my late teens or early twenties. I'm 56 now and I was wondering if anyone has put together a document for successfully restoring Altair computers specifically and retro style computers in general. Any help i

Re: Tired of EVERYTHING with a gear being called STEAMPUNK? Yikes I am...

I am very envious of the animators skills on those singing people in the still portraits.. Heh is there any easy way to do this? Ed# In a message dated 2/7/2016 1:13:03 P.M. US Mountain Standard Time, p...@dunnington.plus.com writes: On 07/02/2016 17:50, couryho...@aol.com wrote:

Re: Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

I'll not pretend to be any sort of Altair expert, but I did manage a fairly involved rebuild / restoration of one, about a year back. Here's a link to the set of documents I collected in the process: https://nerp.net/~legendre/altair/ My machine is restored to what you might call a "freshly built

Re: Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

On Sun, Feb 7, 2016 at 3:23 PM, Kip Koon wrote: > I also have an original Altair 8800 that has not been powered up since I was > in my late teens or early twenties. I'm 56 now and I was wondering if > anyone has put together a document for successfully restoring Altair > computers specifically an

Re: 386 upgrade board

That's good to know that they are out there. If anyone has one they would be willing to part with, please let me know. I'm also in the market for an ISA hard card if anyone has one. Thanks, Joe This email has been sent from a virus-free computer protected by Avast

Re: Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

Good point.. and if you have the later PSU with the 95,000uF 12V cap, pay close attention to that guy. FYI, power supplies in the Altair typically work like this: In the chassis, there are two regulated +18 / -18V supplies of 1A each, and an unregulated ~8V supply capable of substantial current. O

RE: Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

Hi drlegendre, Care go be a sounding board/technician troubleshooter when the time comes for me to start this journey? :) Kip Koon computer...@sc.rr.com http://www.cocopedia.com/wiki/index.php/Kip_Koon > -Original Message- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Beh

Re: Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

Sure, I'm glad to help - but bear in mind that I'm a technician, not an engineer - and solid-state logic isn't even my field! ;-) And please don't leave the other members out of the loop - they're some of the guys who helped +me+ through +my+ project.. On Sun, Feb 7, 2016 at 5:04 PM, Kip Koon

RE: Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

Hi drlegendre, Sure, that's fine with me. I'll let you know when I start. I'm thinking the PS is the first thing to check. I wonder how the caps are doing, or should I get a nice modern switching power supply. Kip Koon computer...@sc.rr.com http://www.cocopedia.com/wiki/index.php/Kip_Koon

RE: Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

Hi Brent, Drlegendre and Eric Brent: I took your advice and did a little program to output "A"'s and monitoring Transmitter empty before looping again. That works fine and it will run for hours. Drlegendre: Thanks for the excellent document link. My buddy has the MITS 1K static ram and the MI

Re: Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

Kip, Assuming the initial visual inspection goes well, the PSU is +always+ the first thing to check.. and that goes for everything from digital computers to vacuum-tube radios. Do you have a general background in electrical / electronic troubleshooting? Do you have a Variac on-hand, or at least a

Re: Help with getting an original Altai running: 8080A clock circuitry and MITS88 2-SIO board

Pardon this, it was meant to be part of the previous message.. Kip, a modern switching supply won't really win you anything, and IMO, kind of wrecks the look (and the vintage fun).. Again, the only regulated supplies produced in the chassis are the +/-18V and they are limited to 1A. I believe the

Re: Tired of EVERYTHING with a gear being called STEAMPUNK? Yikes I am...

I'm just tired of seeing really nice clocks turned into a pile of junk. Dwight From: cctalk on behalf of Pete Turnbull Sent: Sunday, February 7, 2016 12:00 PM To: cctalk@classiccmp.org Subject: Re: Tired of EVERYTHING with a gear being called STEAMPUNK?

Re: The PDP11/04 has landed..

On Sun, 7 Feb 2016, Jos Dreesen wrote: Yesterday I picked up the PDP11/04 that Jay mentioned a few days ago. Less than 15 miles from home ! First week on the job in March 1980, my new boss brought me two pdp11/04s and a box of memeory chips. He to told me to double the memory in the two comp

RE: The PDP11/04 has landed..

> -Original Message- > From: cctech [mailto:cctech-boun...@classiccmp.org] On Behalf Of Jos > Dreesen > Sent: 07 February 2016 17:55 > To: classic...@classiccmp.org > Subject: The PDP11/04 has landed.. > > > > Yesterday I picked up the PDP11/04 that Jay mentioned a few days ago. > Less